How to use Expressionsinbar

Expressionsinbar lives in the menubar of your Mac - So it is always only just click away !
Use the extended user interface and keyboard features for quick solutions.


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Click to launch application.

Click on the icon in the menu bar.

You are now ready to use ExpressionsinBar !

How to use the “Expressionsinbar” application ?

Type an expression in the text field labelled “input expression”. As you type, ExpressionsinBar will automatically and continuously evaluate the expression and present the outcome of the calculation in the “Result” view.

For example typing the input expression “1+2” yields “3” in the result window.

Input expression field

Result view field

Popup menu

Clear input

Input field menu

Clicking on the Input field “search” icon will pull down a menu which contains the “Favorite Expressions” and “Recent Expressions”.

“Favorite Expressions” contains a list of useful expressions which illustrate the power of ExpressionsinBar.

“Recent Expressions” gets populated as you type in your expressions.

Use “Clear Recents” to clear this item list.

Use “drag-and-drop” to copy the result of the calculations into your favorite application (not on Mac OS X 10.6 - on version 10.6 refer to the “Action” pop-up menu).

Textedit document

For example you can easily drag the result of an integration into a Textedit document:

Use the “Actions” pop-up menu to copy the result of the calculations into the clipboard for easy pasting into your favorite application.

Select the “Copy Result to Clipboard” in the “Actions” pop-up menu to copy into the clipboard.

Select your favorite application (for example Textedit) and use the conventional “Paste” item from the “Edit” menu to insert the result.

Check the Tutorial page (here). The possibilities are infinite-less ! Enjoy ExpressionsinBar !

Where can I find the description and the format of valid expressions ?

Numerical results are available in many formats :

With “Exact” the output preserves irrationals and fractions.

With “Float” the answer uses a decimal place and you select number of digits (as many as you want !!  try 100 for instance !)

Click the check button “Evalf” to enable or disable the automatic numerical evaluation of the result.

With “Scientific” the result uses a scientific notation with exponents.

With “Engineering” the result is restricted to have an exponent in multiples of 3.

Virtual keyboard view

NDigits: number of digits

How to use the “Expressionsinbar” application in the menu bar?